ZJHM Compact Pneumatic Diaphragm Sleeve Control Valve

ZJHM Compact Pneumatic Diaphragm Sleeve Control Valve

ZJHM Compact Pneumatic Diaphragm Sleeve Control Valve consists of a pneumatic multi-spring diaphragm actuator paired with a compact sleeve-type control valve. Its main features include:Balanced Trim Design – The balanced plug greatly reduces unbalanced forces, allowing for a higher permissible differential pressure and ensuring stable operation.Large Guiding Surface – The enlarged guiding area improves stability and reduces oscillation caused by vortex effects and impact forces.Low Noise Performance – Noise levels are approximately 10 dB lower than conventional single-seat or double-seat control valves.Simple Structure & Easy Maintenance – The design is straightforward, enabling convenient assembly, disassembly, and servicing.

European-style premium construction, precise control performance, excellent sealing, advanced design, and superior quality.

High-precision engineering, optimized structure, smooth flow, fast response, and a reliable alternative to imported products.

Low pressure loss, stable output force, high flow coefficient, and smooth, equal-section flow passage.

Wide control range, high flow-characteristic accuracy, top-guided structure, and easy handwheel operation.ange, high flow-characteristic accuracy, top-guided structure, and easy handwheel operation

Technical Parameters and Performance - Valve Body
Type	Straight-through cast ball valve
Nominal Diameter	25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300mm
Nominal Pressure	PN16, 40, 64bar
Flange Standard	JB/T79.1-94, 79.2-94, etc.
Material	Cast steel (ZG230-450), Stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti), etc.
Upper Bonnet	Standard type: -17~230℃Heat dissipation type: 230~450℃Low temperature type: -60~-196℃Bellows sealed type: -40~350℃
Bonnet Type	Bolted type
Packing	V-type PTFE packing, Impregnated PTFE asbestos packing, Asbestos textile packing, Graphite packing
Structural Type	See Figures (1~4) for details

Technical Parameters and Performance - Inner Valve Components
Valve Core Type	Pressure balanced valve core
Flow Characteristic	Equal percentage characteristic and linear characteristic
Material	Stainless steel (1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 17-4PH, 9Cr18, 316L), Stainless steel surfacing Stellite alloy, Titanium and corrosion-resistant alloy, etc.

Technical Parameters and Performance - Actuator
Type	ZHA/B multi-spring diaphragm actuator
Model	ZHA/B-22	ZHA/B-23	ZHA/B-34	ZHA/B-45	ZHA/B-56
Effective Area (cm²)	350	350	560	900	1400
Stroke (mm)	10, 16	25	40	40, 60	100
Spring Range (KPa)	20~100 (Standard), 20-60, 60-100, 40-200, 80-240
Diaphragm Material	Nitrile rubber with nylon fabric, EPDM rubber with nylon fabric
Supply Pressure	140~400KPa
Air Source Interface	RC1/4"
Ambient Temperature	-30~70℃

Valve action mode: Normally closed (B) - valve opens when air supply is lost (FO); Normally open (K) - valve closes when air supply is lost (FC)

Supplement: Positioner, air filter and pressure reducing device, hold-down valve, travel switch, valve position transmitter, handwheel mechanism, etc.

Performance
Item		Witdout Positioner	Witd Positioner
Basic Error %		±5.0	±1.0
Hysteresis %		≤3.0	≤1.0
Dead Band %		≤3.0	≤0.4
Start-End Point Deviation %	Start Point (Air Open)	±2.5	±1.0
	End Point (Air Open)	±5.0	±1.0
	Start Point (Air Close)	±5.0	±1.0
	End Point (Air Close)	±2.5	±1.0
Rated Stroke Deviation %		≤2.5	≤2.5
Leakage l/h		0.01%×Valve Rated Capacity	0.01%×Valve Rated Capacity
Adjustable Range R		30:1	30:1

Rated Flow Coefficient Kv, Rated Stroke, Matched Actuator Model
Nominal Diameter DN (mm)	25	32	40	50	65	80	100	125	150	200	250	300
Valve Seat Diameter DN (mm)	25	32	40	50	65	80	100	125	150	200	250	300
Rated Flow Coefficient Kv - Linear	11	17.6	27.5	44	69	110	176	275	440	690	1000	1600
Rated Flow Coefficient Kv - Equal Percentage	10	16	25	40	63	100	160	250	400	630	900	1440
Rated Stroke L (mm)	16		25			40			60		100
Matched Actuator Model	ZHA/B-22		ZHA/B-23			ZHA/B-34			ZHA/B-45		ZHA/B-56

Allowable pressure difference
Nominal Diameter DN (mm)			25	32	40	50	65	80	100	125	150	200	250	300
Valve Seat Diameter DN (mm)			25	32	40	50	65	80	100	125	150	200	250	300
Actuator			ZHA/B-22	ZHA/B-23			ZHA/B-34			ZHA/B-45			ZHA/-56
Action Mode	Air Source Pressure (Kpa)	Spring Range (Kpa)	Allowable Pressure Difference △(bar)
Air Close	140	20~100	30	22.5	22.5	19.5	23.6	20.4	16.7	14.1	14.1	14.1	6.5	5.5
	250	20~100	64	64	64	64	64	64	64	64	64	64	15.5	14
	400	40~200	64	6.4	64	64	64	64	64	64	64	64	40.8	40.8
Air Open	140	20~100	15	11.3	11.3	9.8	11.8	10.2	8.4	7.1	7.1	5.7	6.5	5.5
	250	40~200	45	33.8	33.8	29.3	35.4	30.6	25.1	21.2	21.2	17.1	18	15.5
	400	80~240	64	64	64	64	64	64	58.5	49.4	49.4	40	40.8	36.5

Note: For the bellows-sealed regulating valve, the maximum allowable pressure difference is 10 bar. If the value in the table is less than 10 bar, it remains unchanged; if it is greater than 10 bar, it is taken as 10 bar.

Outline Dimensions and Weight（mm）
Nominal Diameter	25	32	40	50	65	80	100	125	150	200	250	300
L - PN16/40	184	220	222	254	276	298	352	410	451	600	730	850
L - PN64	210	251	251	286	311	337	394	457	508	650	775	900
A	285	285	285	285	360	360	360	470	470	470	580	580
H1 - PN16/40	128	152	152	160	205	205	208	273	330	364
H1 - PN64	140	160	160	180	210	210	220	290	340	370
H2	298	298	298	298	380	380	380	510	510	510
H3 - PN16/40	208	224	228	228	334	334	342	408	453	482
H3 - PN64	220	240	240	240	350	350	360	420	470	500
H4	338	402	402	405	627	628	635	698	702	728
H5 - PN16/40	58	68	73	80	90	98	108	123	140	168
H5 - PN64	68	75	83	88	100	105	125	148	170	203
C	220	220	220	220	270	270	270	320	320	320
H6	180	180	180	180	236	236	236	310	310	310
Weight (kg) - PN16/40	22	24	32	38	62	67	83	132	160	245
Weight (kg) - PN64	25	30	42	52	78	82	102	170	190	285

Note:

1. The weights shown in the table are for the standard type without accessories. Side-mounted handwheels can also be installed.

2. The flange and the flange end face distance can be manufactured according to the user's specified standards, such as: ANSI JIS, DIN standards.

Dimensions and weight（mm）
Nominal Diameter	25	32	40	50	65	80	100	125	150	200	250	300
L - PN16/40	184	220	222	254	276	298	352	410	451	600	730	850
L - PN64/100	210	251	251	286	311	337	394	457	508	650	775	900
A	285	285	285	285	360	360	360	470	470	470
H1	700	700	700	700	700	700	700	700	700	700
H2	298	298	298	298	380	380	380	510	510	510
H3	88	88	88	88	94	94	940	110	110	110
H5 - PN16/40	58	68	73	80	90	98	108	123	140	168
H5 - PN64/100	68	75	83	88	100	105	125	148	170	203
D1 - PN16/40	230	250	270	305	342	375	430	490	556	665
D1 - PN64/100	270	305	342	375	430	490	556	665	665	765
D2 - PN16/40	310	335	355	390	430	465	520	585	660	770
D2 - PN64/100	355	390	430	465	520	585	600	770	770	890
h	15	15	15	15	18	18	18	20	20	20
n-d - PN16/40	8-12	8-12	8-14	8-14	10-14	10-14	12-16	14-16	16-16	18-16
n-d - PN64/100	8-14	8-14	10-14	10-14	12-16	14-16	16-16	18-16	18-16	18-16
Y	45	60	65	75	90	104	135	165	195	245
C	220	220	220	220	265	265	265	315	315	315
H6	180	180	180	180	240	240	240	304	304	304
Weight (kg)	48	52	60	68	90	105	143	210	282	315

Note:

1. The insulation length is taken as 700mm for example. The weight in the table is the PN16 data. Side-mounted handwheels can also be installed.

2. The valve flange and the flange end face distance can be manufactured according to the user's specified standards, such as ANSI, JIS, and DIN standards.